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Conclusions

This dissertation presented the work done towards low frequency study of a sample of new candidate Galactic Supernova remnants (SNRs). Details of the observations of this sample of new candidate SNRs, data calibration, analysis and interpretation were presented. A number of other sources are visible in the $ \sim1{^\circ}.4$ field of view of these observations, and the nature of some of these sources was also discussed. This work constitutes one of the first observations using the imaging capabilities of the Giant Meterwave Radio Telescope (GMRT), which is predominantly a low frequency instrument. The GMRT has only recently come to a stage where it can be used for mapping complicated fields like the ones studied in this dissertation. This required system debugging, system parameter measurements, calibration and understanding of the instrument, which in-turn led to the development of data analysis techniques and algorithms and related software. Details of instrumental calibration, debugging, related software and algorithm development were also presented. A new method for the computation of polarization leakage using only the co-polar visibilites was also described. Polarization leakage manifest themselves as closure errors in the co-polar visibilities and this method can be used to correct for such closure errors.



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Next: Using the Giant Meterwave Up: S.Bhatnagar: Thesis Previous: Conclusions   Contents
Sanjay Bhatnagar 2005-07-07